Yes, we know that, as a finding of fact from the court case cited earlier by Bricker. To quote:
“The primary reason – if not only commercial reason - for cleaning soybean seed is to have it prepared for replanting: by removing this trash from the harvested crop, it is conditioned for planting so that it does not impair the planting equipment and ensures that viable seed is placed into the ground.”
I assume a finding of fact from the district court is acceptable evidence. 
Yes. District court again:
“In 2002 Monsanto sent a letter by certified mail to Parr explaining that it was the owner of the ‘605 patent and that Roundup Ready crop seed was covered by the ‘605 patent. This letter also explained that a limited-use license was required to use the crop seed and that saving a crop grown from the licensed seed for planting or selling for replanting was an infringement. The letter stated that Monsanto had information that Parr’s seed cleaning business facilitated seed replanting, and further that Parr encouraged and induced growers to clean and replant soybeans which he knew contained Monsanto’s patented technology. Finally, the notice requested that Parr cease any actions that induced infringement of the ‘605 patent…”
“At some point in 2003 or 2004, Williams testified that he asked the defendant about cleaning Roundup Ready soybeans, and was informed by the defendant that it was permissible for a farmer to save Roundup Ready soybeans for his own use. After this discussion, Williams felt that it would be safe to save, clean and replant Roundup Ready soybeans. Williams saved some of his 2005 Roundup Ready soybean crop, had it cleaned by the defendant, and planted that saved seed in the 2006 growing season.”
To add stupidity to greed, these “merely seed washers” were dumb enough to into writing what they were doing:
"Parr provides his customers with an invoice for his services which include the following disclaimer: As of the date this ticket was printed, the U.S. Congress, through federal seed laws, has expressly protected the rights of farmers to save grain that they have produced for use to seed land that they own, lease or rent.
Some seed/chemical companies attempt to circumvent those rights by requiring farmers to sign agreements giving up those rights in order to purchase certain brands/types of seed. Custom seed cleaning is not a party to such agreements and will, in no way, hold itself responsible for compliance or enforcement of said agreements…
Monsanto sent a letter by certified mail to Parr explaining that it was the
owner of the ‘605 patent and that Roundup Ready crop seed was covered by the ‘605 patent. This letter also explained that a limited-use license was required to use the crop seed and that saving a crop grown from the licensed seed for planting or selling for replanting was an infringement. The letter stated that Monsanto had information that Parr’s seed cleaning business facilitated seed replanting, and further that Parr encouraged and induced growers to clean and replant soybeans which he knew contained Monsanto’s patented technology. Finally, the notice requested that Parr cease any actions that induced infringement of the ‘605 patent"
There is no doubt here that these seed washers knew that they were washing patented material. They were also informed by Monsanto, in writing and verbally, that washing such material was illegal and asked to stop. They not only refused to stop their illegal activities, they actually *encouraged *their customers, both verbally and in writing, to undertake the illegal activity.
And griffin1977 wants us to accept that these people were “merely washing seeds”. We have undisputed evidence that they knew that replanting the seed was illegal. We have writing in their own hand stating that they were encouraging customers to undertake this illegal activity, despite being informed that both the sowing and the encouragement was illegal.
There is no disputing that these people knowingly facilitated an illegal act for profit. Yet according to griffin1977 this is standard farming practice.
Well it’s not standard practice for any farmer I know, mate.